Add 15/3 and 21/84
1st number: 5 0/3, 2nd number: 21/84
15/3 + 21/84 is 21/4.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 3 and 84 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 3 × 28 = 84,
15/3 = 15 × 28/3 × 28 = 420/84 - Likewise, for the 2nd fraction, since 84 × 1 = 84,
21/84 = 21 × 1/84 × 1 = 21/84 - Add the two like fractions:
420/84 + 21/84 = 420 + 21/84 = 441/84 - 441/84 simplified gives 21/4
- So, 15/3 + 21/84 = 21/4
In mixed form: 51/4
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